The 2,755-pound sculpture, by Maltese chocolate artist Andrew Farrugia, is on display at Brussels South station and measures about 112 feet, Britain's ITN reported Tuesday.
Farrugia, who spent more than 700 hours on the sculpture, said he decided to create the chocolate train after visiting the Belgian Chocolate Festival in Bruge last year.
"I had this idea for a while, and I said what do you think if we do this realization of a long chocolate train, you know, because a train you can make it as long as you like," Farrugia said. "Actually it was going to be much smaller than it was, but I kept on adding another wagon, and another wagon, and it's the size it is today."
Guinness officials said they measured the train and ensured no materials other than chocolate were used in its construction before certifying it as the record holder in the new longest chocolate structure category.